Waterbuck is rather sedentary in nature. A gregarious animal, the waterbuck may form herds consisting of six to 30 individuals. These groups are either nursery herds with females and their offspring or bachelor herds. Males start showing territorial behaviour from the age of five years but are most dominant from the age of six to nine. The waterbuck cannot tolerate dehydration in hot weather, and thus inhabits areas close to sources of water. Cows are smaller than bulls. Waterbucks have a brownish-grey shaggy coat. The eyes and nose are patched with white, and there is a white collar under the throat. The rump has a characteristic white ring. The large rounded ears are a prominent feature. Only the bulls have long, forward curved horns. Both sexes emit a not unpleasant musky smell which normally lingers at resting sites.